PartsTable
Technical Data Sheet

AS8791/1 — RETAINER,PACKING

✓ Government record, cited
— · ORING SEAL
PRODUCT OVERVIEW

AS8791/1: RETAINER,PACKING.

The RETAINER,PACKING is a the manufacturer industrial component. Key specifications include material: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL, joint_type: SCARF-PERIPHERAL OVERALL, special_features: CLEANED IAW MIL-STD-1330, peripheral_diameter: 2.986 INCHES MINIMUM AND 2.992 INCHES MAXIMUM IN, center_hole_diameter: 2.622 INCHES MINIMUM AND 2.624 INCHES MAXIMUM IN, fsc_application_data: (78062)21780-400 SUBPLATE ASSEMBLY. This part is cataloged in the U.S.

Government catalog under NSN 5330-01-339-8454, indicating validated use in U.S. government and defense logistics supply chains. Available through authorized enterprise resellers and TPM (Third Party Maintenance) channels.

Verify compatibility with your specific system configuration before ordering.

WHERE IT FITS
AS8791/1
NSN: 5330-01-339-8454
NIINs: 013398454, 013433202, 013515567, 013517120, 013517121, 013517123, 013517124, 013517966, 013517967, 013517968, 013517969, 013517970, 013517972, 013517973, 013517975, 013522647, 013522648, 013522649, 013523133, 013523365, 013524430, 013528157, 013645834, 013645835, 013713650, 013777651, 013802479, 013870550, 014069459, 014139025, 014144716, 014164618, 014288857, 014321245, 014436931, 014491905, 014542829, 014585580, 014585584, 014645122, 014782102, 014782129, 014787503, 014787537, 014788437, 014789353, 014789356, 014830781, 014878572, 014971828
FSC: 5330 — Packing and Gasket Materials
CAGE: 81343 — SOCIETY OF AUTOMOTIVE ENGINEERS INC (USA)
SPECIFICATIONS
materialPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
joint_typeSCARF-PERIPHERAL OVERALL
special_featuresCLEANED IAW MIL-STD-1330
peripheral_diameter2.986 INCHES MINIMUM AND 2.992 INCHES MAXIMUM IN
center_hole_diameter2.622 INCHES MINIMUM AND 2.624 INCHES MAXIMUM IN
fsc_application_data(78062)21780-400 SUBPLATE ASSEMBLY
cross-sectional_height0.086 INCHES MINIMUM AND 0.090 INCHES MAXIMUM IN
cross-sectional_shape_styleSQUARE/RECTANGULAR
specification/standard_data81349 MIL-R-8791 REV D /CANCELED/ GOVERNMENT SPECIFICATION
departure_from_cited_documentCLEANING, PACKAGING, AND MARKING IAW MIL-STD-1330D
criticality_code_justificationZZZW
material_document_and_classificationAS8791/1 ASSN STD SINGLE MATERIAL RESPONSE OVERALL
NSN5330-01-339-8454
COMPONENT DIAGRAM
O-RING / SEAL — MATERIAL DETERMINES APPLICATION ID: — CROSS-SECTION CS: — SPECIFICATION Material: — Durometer: — Temp: — PN: AS8791/1 MFR: OEM ⚠ VERIFY BEFORE ORDERING Wrong material = failure. Viton for oil/fuel, EPDM for water/steam, Buna-N for general purpose, Silicone for food-grade. Chemical incompatibility causes swelling, brittleness, or rapid degradation ✓ BROKER TIP Durometer (hardness) affects sealing pressure tolerance. Higher Shore A = harder = higher pressure. Standard durometer is 70A — verify if application requires different hardness PARTSTABLE TECHNICAL DRAWING — NOT TO SCALE
KEY FEATURES
•
CROSS-SECTIONAL HEIGHT: 0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
•
MATERIAL DOCUMENT AND CLASSIFICATION: SAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
•
CROSS-SECTIONAL SHAPE STYLE: SQUARE/RECTANGULAR
•
PERIPHERAL DIAMETER: 1.466 INCHES NOMINAL IN
•
CENTER HOLE DIAMETER: 1.380 INCHES NOMINAL IN
•
MATERIAL: PLASTIC POLYTETRAFLUOROETHYLENE OVERALL
•
JOINT TYPE: SCARF-PERIPHERAL OVERALL
TECHNICAL CHARACTERISTICS
CROSS-SECTIONAL HEIGHT0.052 INCHES MINIMUM AND 0.056 INCHES MAXIMUM IN
MATERIAL DOCUMENT AND CLASSIFICATIONSAE-AS8791 NATIONAL SPEC SINGLE MATERIAL RESPONSE OVERALL
CROSS-SECTIONAL SHAPE STYLESQUARE/RECTANGULAR
PERIPHERAL DIAMETER1.466 INCHES NOMINAL IN
CENTER HOLE DIAMETER1.380 INCHES NOMINAL IN
MATERIALPLASTIC POLYTETRAFLUOROETHYLENE OVERALL
JOINT TYPESCARF-PERIPHERAL OVERALL
OTHER ITEMS IN FSC 5330 — Packing and Gasket Materials
Items in the same Federal Supply class. No interchangeability or substitution relationship is implied.
5330-00-000-0085 5330-00-000-0167 5330-00-000-5275 5330-00-001-1260 5330-00-001-1833 5330-00-001-1844 5330-00-001-1845 5330-00-001-1846
SUBSTITUTES & CROSS-REFERENCES 3
SAE-AS8791/1Reference document
Same NSN cross-reference
Reference document — Design control — primary reference
M8791/1-126Reference document
Same NSN cross-reference
Reference document — Secondary reference
MIL-R-8791/1Reference document
Same NSN cross-reference
Reference document — Secondary reference
LIFECYCLE
NSN statusActive· U.S. Government catalog
Acquisition advice: Insurance item — stocked against contingency demandNo demilitarization required
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FREQUENTLY ASKED QUESTIONS
What is AS8791/1?
AS8791/1 is a RETAINER,PACKING.
What parts can replace AS8791/1?
There are 3 known substitutes for AS8791/1: SAE-AS8791/1, M8791/1-126, MIL-R-8791/1. Substitute compatibility should be verified for your specific system.
What is the NSN for AS8791/1?
AS8791/1 is cataloged in the U.S. Government catalog under NSN 5330-01-339-8454. This indicates validated use in U.S. government and defense supply chains.
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✓ PartsTable — the parts reference. Every fact cited to its source.
PartsTable Design LLC · partstable.com
U.S. Government catalog: edition PUBLOGDVD v12.0.0 (OCT 2026), edition date 2026-10-01, retrieved 2026-10-18.
PartsTable commercial catalog: edition Unified commercial catalog snapshot through 2026-09-28, edition date not on file, retrieved 2026-09-28.